Structural analysis of PVA-based proton conducting membranes
Artikel i vetenskaplig tidskrift, 2006

We have synthesized and characterized a new family of proton conducting membranes based on cross-linked poly(vinyl alcohol), PVA, and functionalized silica filler. Glutaraldehyde, GLA, was used as the cross-linking agent in order to improve chemical and thermal stabilities. The functionalization of the silica particles is such that terminal -SO 3 H groups are formed during membrane preparation, thus possibly providing additional mobile protons. We find that the crystallinity of the PVA-based membranes is enhanced by the presence of the functionalized silica particles, whereas it is reduced by means of cross-linking. The thermal stability of the ternary system PVA:GLA:silica is improved due to the additive contribution of GLA and silica. The conductivity of membranes swelled in a sulfuric acid solution was found to be of the order of 10 - 1 S cm - 1 . © 2006 Elsevier B.V. All rights reserved.

Författare

Anna Martinelli

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Aleksandar Matic

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Per Jacobsson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Lars Börjesson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

M.A. Navarra

Sapienza, Università di Roma

A Fernicola

Sapienza, Università di Roma

S Panero

Sapienza, Università di Roma

B Scrosati

Sapienza, Università di Roma

Solid State Ionics

0167-2738 (ISSN)

Vol. 177 2431-2435

Ämneskategorier

Annan teknik

DOI

10.1016/j.ssi.2006.01.035